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"hundredths" digits of the ppm threshold to any value
between 0 and 9. Used together, the HOLD, BKLT, MODE
and MAX/MIN buttons allow you to set the alarm threshold
to any value between 0 and 5 ppm with 0.01 ppm
resolution.
Once you have adjusted the high alarm threshold to its
desired value, press and hold the SET button to save the
setting and return to real-time measurement mode.
6) Arm and disarm the high concentration alarm.
a. To arm the alarm, briefly press (but do not hold) the
PWR button until the
corner of the LCD.
b. To disarm the alarm, briefly press the PWR button until
the
icon disappears.
c. To cancel the alarm when it sounds, briefly press the
PWR button.
7) Display maximum and minimum formaldehyde,
temperature and RH session values, as well as
cumulative formaldehyde exposure levels. A
measurement session is the period of time during which
you measure the formaldehyde level, temperature and RH
at multiple locations. The session begins when you power
on the HHAQ-108; it typically ends 15 minutes after you
finish making measurements with the activation of the APO
function. You can extend a measurement session beyond
icon appears in the upper left
13
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